They were reading the text aloud when the teacher ___(come) in.
A. coming
B. came
C. was coming
D. come
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At this time last week,we ___(work) with our new project.
A. worked
B. to working
C. work
D. were working
We often ___(go) swimming when we were young.
A. going
B. would go
C. were used to go
D. were going
What ___you ___(do) at eight 8:00 last night?
A. were ....doing
B. did﹉....do
C. do...do
D. were...di
In the past 30 years, great changes ___(take place) in our country.
A. took place
B. take place
C. have taken place
D. were taking place.
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